Sentences with phrase «outer galactic disk»
The central region of the Milky Way is dominated by a bar - like structure, which stirs up the material in the outer galactic disk as it rotates over millions of years and may be responsible for its spiral structure.
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However, their gravity has affected our Galaxy as well, distorting the outer parts of the galactic disk.
Moving out from this central galactic bulge, the panorama sweeps from the galaxy's central bulge across lanes of stars and dust to the sparser outer disk.
The rotation curve is flat in the outer parts of most galactic disks (dark matter!).
Some are found in globular clusters, but most move in a huge cloud around the disk called the galactic halo, which has a luminous inner component defined by globular star clusters and other easily observable stars (with coronae of hot gas possibly expelled by supernovae and of high - velocity neutron stars) and an outer dark - matter component inferred from its gravitational impact on the Milky Way's spiral disk.